2 years ago

I needdddd helppppppppp

Mathematics

1 answer:

Aneli [31]2 years ago

5 0

Answer:

Step-by-step explanation:

sum of angles in a triangle is 180

6n +1 +108+9n-4=180

15n = 180 -105

15n = 75

n= 75/15 = 5

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Otrada [13]

Answer: (0.8115, 0.8645)

Step-by-step explanation:

Let p be the proportion of people who leave one space after a period.

Given: Sample size : n= 525

Number of people responded that they leave one space. =440

i.e. sample proportion: $\hat{p}=\dfrac{440}{525}\approx0.838$

z-score for 90% confidence level : 1.645

Formula to find the confidence interval :

$\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$0.838\pm (1.645)\sqrt{\dfrac{0.838(1-0.838)}{525}}\\\\=0.838\pm (1.645)\sqrt{0.00025858285}\\\\=0.838\pm (1.645)(0.01608)\\\\= 0.838\pm0.0265\\\\=(0.838-0.0265,\ 0.838+0.0265)\\\\=(0.8115,\ 0.8645)$

Hence, a 90% confidence interval for the proportion of people who leave one space after a period: (0.8115, 0.8645)

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3 years ago

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butalik [34]

There’s not enough info — you only have SS.

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2 years ago

A gaming console that is $300 plus 8% tax. What is the final cost of the console? (Round to nearest cent)

Novay_Z [31]

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It should be 324.

Step-by-step explanation:

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Leno4ka [110]

1) 543/1000
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You're welcome ;)

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LekaFEV [45]

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Step-by-step explanation:

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